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I'm keeping an eye on your resarch, mr dxs. I'm interested in how it all goes, as when I finally get around to CTR internals, I'll be looking at an ITR fuel/air system too. Pitty I can't actually contribute at this stage, so just consider this post some moral support hehe
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Interesting,
im going to stick my neck out and say that he would likely be making more power before ANY of the suggested FPR & rail changes suggested in this thread.
Remember, Hondas run rich from factory, and at max torque at Wide Open Throttle (in vtec), peak timing is 26-27 deg advance, everywhere else its 24deg.
 Originally Posted by JohnnyVtec
In regards to more pressure, you've just installed an intake manifold which flow's a sh*tload more cfm than a b16 manifold in the upper rpm range not to mention the fact that you're getting your throttlebody bored.
In regards to factory maps, (put simply) B series honda maps come with too much timing in the upper rpms to try and compensate for the large amounts of fuel they have to run due to the flow capablities that the B series have. By adding a more capable intake manifold and throttlebody, you have just performed a modification which will lean your engine. You will require more fuel in order for your engine to last and make good power, hence my suggestion that you use the itr fpr.
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You should know by now that i have already done this swap. I've already provided you with the best answers i can.
I'm not going to force you
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Originally Posted by ProECU
Interesting,
im going to stick my neck out and say that he would likely be making more power before ANY of the suggested FPR & rail changes suggested in this thread.
Remember, Hondas run rich from factory, and at max torque at Wide Open Throttle (in vtec), peak timing is 26-27 deg advance, everywhere else its 24deg.
Already done the swap, it's too lean without more psi. (I'm not a tuner by any means) however i will say that my slightly modded B16a2 is making around 165whp on 25total and an afr that still needs work down low yet, soon to be 12.8 across.
As far as honda's running rich from factory, I've hypothesized there's a reason for it. As previously explained my theory is, high flow cfm cyl head and manifold from factory needs extra fuel to deal with the air.
If you were on the coast i would be eager to perform some tests with you present to either confirm or deny in front of you. I've done my best to explain, if you don't see what i mean. i musn't have done a very good job.
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how lean is lean? what afr's?
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Lean is 14.9-17.0+
Final post, Cheers....
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**** johnny.. dont take it so personally
running rich is a typical safety thing..
so you are saying using a itr intake mani and a bored tb will make the car run lean
Last edited by Dxs; 31-05-2007 at 11:12 PM.
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stingy?
would you like to explain one thing to me..
if the ecu calculates the injector duration based on RPM and MAP values.. how would an intake mani and tb affect the AFR so dramatically?
also using say a walbro fuel pump.. will that increase the pressure?
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yes (STINGY) as in you havent even offered a thank you.(Dont bother)
That being said, I'm sure you won't be uneasy with my being finished answering any more of your questions. Best of luck to you......
Last edited by JohnnyVtec; 01-06-2007 at 10:32 PM.
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you are taking my cynicism as personal attacks,
where as i am just trying to learn/understand things
i am going to have to get a wideband with meter kit... to see what conclusions i come to
can anyone else answer my q's as to manifold and tb boring in relation to how the ecu will calculate the fuel?
and if aftermarket pumps do increase fuel pressure?
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Originally Posted by JohnnyVtec
Lean is 14.9-17.0+
Final post, Cheers....
lol, 2-5 a/f points leaner with just a TB & mani change,lol
you'd be dangerous if you found the other 1/2 of your brain
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